Personalized My first St Patrick's Day Baby's First St Patricks T-Shirt. Ideal for gifting or as a keepsake, this adorable apparel is a wonderful way to commemorate your baby's first St. Patrick's Day. Dress them in style and let them join in the fun of this beloved holiday with a touch of charm and joy. Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.